<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <h1>添加班级</h1>
    <form method="POST" action="/add_class/">
        <p>班级名称：<input type="text" name="title"/></p>
        <input type="submit" value="提交">{{ msg }}
    </form>
</body>
</html>